#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <unistd.h>
int main()
{
    printf("Hello printf\n");
    fprintf(stdout,"Hello fprintf\n");
    fputs("Hello fputs\n", stdout);

    const char* str = "Hello write\n";
    write(1, str, strlen(str));
    fork();
    return 0;
}